CN117849983A - High-precision return difference-free gear focusing mechanism and method for aviation camera - Google Patents
High-precision return difference-free gear focusing mechanism and method for aviation camera Download PDFInfo
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- CN117849983A CN117849983A CN202410202258.3A CN202410202258A CN117849983A CN 117849983 A CN117849983 A CN 117849983A CN 202410202258 A CN202410202258 A CN 202410202258A CN 117849983 A CN117849983 A CN 117849983A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a high-precision return-difference-free gear focusing mechanism and a method for an aviation camera, which belong to the technical field of aviation.
Description
Technical Field
The invention relates to the technical field of aviation, in particular to a high-precision return difference-free gear focusing mechanism and method for an aviation camera.
Background
In the process of executing tasks, the flying height of the aerial camera is always in a changing state and is interfered by the environment such as the external temperature, so that the imaging system is in a virtual focus phenomenon and cannot acquire clear image quality.
In the past conventional cam zoom mechanism, a motor with a reduction gearbox is used for installing a driving gear as a driving unit to provide power, a potentiometer is used for installing a driven gear as an angle measuring element for closed-loop control, and because return difference exists in the gear engagement of the motor reduction gearbox and the return difference also exists in the gear engagement of the potentiometer, the angle measuring precision is not high, and the repeated positioning precision can not meet the requirement of high-precision focusing.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects in the prior art, so as to provide a high-precision return difference-free gear focusing mechanism for an aviation camera.
A high precision return difference free gear focus mechanism for an aerial camera comprising: the focusing device comprises a focusing execution assembly, a touch switch, a limiting block, a main lens barrel, a sliding guide pin, a cam assembly and a focusing lens group;
the focusing lens group is connected to the inside of the main lens barrel, the focusing lens group is fixedly connected with a pair of sliding guide nails, a sleeve in the cam assembly is sleeved outside the main lens barrel, and the pair of sliding guide nails are matched and connected with a straight chute penetrating through the main lens barrel and on the sleeve; the cam in the cam component is fixedly connected to the sleeve, the touch switch is connected to the side wall of the main lens barrel through the adapter, and the limiting block is fixedly connected to the sleeve and is positioned below the touch switch;
the focusing execution assembly comprises a tension spring, a motor bracket, a photoelectric encoder, a driving main shaft, a torque motor and a clearance eliminating gear set; the torque motor is fixedly connected above the main lens barrel through a motor support, the driving main shaft is fixedly connected on a motor inner ring of the torque motor, an outer ring of an encoder on the photoelectric encoder is installed on the motor support, an inner ring of the encoder on the photoelectric encoder is installed on the driving main shaft, the clearance eliminating gear set comprises a first gear and a second gear, the first gear and the second gear are fixedly connected on the driving main shaft, a first tension spring installation groove and a second tension spring installation groove are respectively formed in the first gear and the second gear, a first tension spring installation hole and a second tension spring installation hole are correspondingly formed in the first tension spring installation groove and the second tension spring installation groove, and two ends of a tension spring are respectively connected with the first tension spring installation hole and the second tension spring installation hole through fixing pieces.
Further, the motor inner ring and the motor outer ring of the torque motor are integrally designed.
Further, the first tension spring mounting groove and the second tension spring mounting groove are all provided with 3.
Further, the motor bracket is mounted on the main barrel by screws.
Further, the torque motor is in butt joint with the motor bracket through a mechanical spigot.
Further, the clearance eliminating gear set is fixed on the driving main shaft through a jackscrew.
Further, the first gear and the second gear are fixedly connected together through screws, a gear mounting hole is formed in the radial direction of the gear mounting portion of the second gear, and the gear mounting hole is used for fixedly connecting the second gear with the driving main shaft through cooperation with the jackscrew.
Further, the modulus of the first gear, the second gear and the cam is 0.5, the number of teeth of the first gear and the second gear is 36, and the transmission ratio of the clearance eliminating gear set and the cam is 1:4.
the invention also comprises a focusing method based on any one of the high-precision return difference-free gear focusing mechanisms for the aerial camera, which comprises the following steps: the image processing program sends instructions to a driving program of the torque motor, the torque motor drives and controls a driving main shaft in a focusing execution assembly to rotate, a clearance eliminating gear set in the focusing execution assembly is meshed with a cam on the cam assembly, the cam is driven to rotate when the focusing execution assembly rotates, a guide pin rotates along a linear chute of a main lens barrel, the focusing lens group slides in the main lens barrel to change the interval axial position of an optical lens, when the image processing program determines the clear position of an image through an algorithm, the instruction is not sent to the driving program of the torque motor any more, the motor stops rotating, and finally the focusing function is realized.
According to the technical scheme, the torque motor is used as a driving unit, the driving main shaft is arranged on the motor inner ring rotor, the clearance eliminating gear set is used as a driving gear and is connected with the driving main shaft, the cam on the cam component is directly driven to rotate, and further the focusing lens is driven to move, the control precision is high, the response speed is high, no backlash phenomenon of a gear box exists, meanwhile, the driving gear adopts a tension spring mode arranged between double gears to be meshed with the cam gear, clearance eliminating design is carried out after the driving gear pair is meshed, no backlash exists in the driving gear pair, no backlash in the transmission process is truly achieved, the angle measuring element adopts a 20-bit photoelectric encoder, the angle measuring precision is high, the encoder inner ring is arranged on the driving main shaft and rotates simultaneously with the driving gear, no angle measuring error is achieved completely, the whole design improves the control precision and the response speed of a focusing structure, and the focusing requirement under a complex environment is met after verification through a high-low temperature test.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side cross-sectional view of FIG. 1;
FIG. 3 is a front cross-sectional view of FIG. 1;
FIG. 4 is a front cross-sectional view of the focus actuator assembly;
FIG. 5 is a side cross-sectional view of the focus actuator assembly;
FIG. 6 is a schematic diagram of a first gear;
FIG. 7 is a schematic diagram of a second gear;
FIG. 8 is a first gear mesh schematic;
fig. 9 is a second gear mesh schematic.
Reference numerals illustrate:
1-focusing an execution assembly; 2-touch switch; 3-limiting blocks;
4-a main barrel; 5-sliding guide nails; a 6-cam assembly;
7-focusing lens group; 8-a tension spring; 9-a motor bracket;
a 10-photoelectric encoder; 10-1-encoder outer ring; a 10-2-encoder inner ring;
11-driving a main shaft; 12-torque motor; 12-1-motor inner ring;
12-2-motor outer ring; 13-a backlash gear set; 13-1-a first gear;
13-1-1-a first tension spring mounting groove; 13-1-2-a first tension spring mounting hole;
13-1-3-tension spring dismounting groove; 13-2-second gear;
13-2-1-second tension spring mounting groove; 13-2-2-second tension spring mounting holes;
13-2-3-gear mounting; 13-2-4-gear mounting holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 to 9, a high-precision return difference-free gear focusing mechanism for an aerial camera includes: the focusing device comprises a focusing execution assembly 1, a touch switch 2, a limiting block 3, a main lens barrel 4, a sliding guide pin 5, a cam assembly 6 and a focusing lens group 7;
the focusing lens group 7 is connected to the inside of the main lens barrel 4, the focusing lens group 7 is fixedly connected with a pair of sliding guide nails 5, a sleeve in the cam component 6 is sleeved outside the main lens barrel 4, and the pair of sliding guide nails 5 are matched and connected with a straight line chute penetrating through the main lens barrel 4 and on the sleeve; the cam in the cam component 6 is fixedly connected to the sleeve, the touch switch 2 is connected to the side wall of the main lens barrel 4 through the adapter, and the limiting block 3 is fixedly connected to the sleeve and is positioned below the touch switch 2;
the focusing execution assembly 1 comprises a tension spring 8, a motor bracket 9, a photoelectric encoder 10, a driving main shaft 11, a torque motor 12 and a clearance eliminating gear set 13; the torque motor 12 is fixedly connected above the main lens barrel 4 through a motor bracket 9, the driving main shaft 11 is fixedly connected on a motor inner ring 12-1 of the torque motor 12, an encoder outer ring 10-1 on the photoelectric encoder 10 is arranged on the motor bracket 9, the coaxial requirements of the inner ring and the outer ring of the photoelectric encoder 10 are ensured through the matching of a mechanical interface (machining spigot), an encoder inner ring 10-2 on the photoelectric encoder 10 is arranged on the driving main shaft 11, one side of the driving main shaft 11 opposite to the encoder inner ring 10-2 is connected with a clearance eliminating gear set 13, the photoelectric encoder 10 is used as a protractor for the rotation of the driving main shaft 11, the real-time position of the clearance eliminating gear set 13 is used as a feedback quantity, the design avoids the angle measurement error of the rotation of the clearance eliminating gear set 13, the clearance eliminating gear set 13 comprises a first gear 13-1 and a second gear 13-2, the first gear 13-1 and the second gear 13-2 are fixedly connected on the driving main shaft 11, a first tension spring mounting groove 13-1 and a second tension spring mounting groove 13-2-1 are respectively arranged on the first gear 13-1 and the second gear 13-2, a first tension spring mounting hole 13-1-2 and a second tension spring mounting hole 13-2-2 are correspondingly arranged on the first tension spring mounting groove 13-1-1 and the second tension spring mounting groove 13-2-1, a tension spring 8 is arranged in the first tension spring mounting groove 13-1-1 and the second tension spring mounting groove 13-2-1, and two ends of the tension spring 8 are respectively connected with the first tension spring mounting hole 13-1-2 and the second tension spring mounting hole 13-2-2 through fixing pieces. Because the involute gear has return clearance in the engaging process, in order to improve the focusing precision and avoid introducing transmission clearance errors, the clearance eliminating gear set 13 is designed to be engaged with the cam on the cam component 6, the tension spring 8 acts in the clearance eliminating gear set 13 to slightly stagger the two gears by a certain angle, under the action of the tension force of the tension spring 8, the gears must overcome the tension force when being engaged and installed, and the gear teeth can enter the normal engaging position.
The whole focusing execution assembly 1 is positioned and installed with the main lens barrel 4, the center distance between the clearance eliminating gear set 13 and the cam in the cam assembly 6 is mechanically ensured, the touch switch 2 is used as an electric limit, electric protection is provided, the torque motor 12 is prevented from being out of control and blocked, the motor is burnt, and the limiting block 3 is used as a touch power generation limiting execution structure to rotate within +/-45 degrees.
When the aerial camera detects that a target appears virtual focus, the image appears blurred, and the purpose of making the image clear is achieved by the axial position of the focusing lens group 7 in the micro-motion optical system, and the specific process is as follows: the image processing program sends an instruction to a driving program of the torque motor, the motor drives and controls a driving main shaft 11 in a focusing execution assembly 1 to rotate, a clearance eliminating gear set 13 in the focusing execution assembly 1 is meshed with a cam on a cam assembly 6, the cam is driven to rotate when the focusing execution assembly 1 rotates, a guide pin 5 rotates along a linear chute of a main lens barrel 4, the focusing lens group 7 slides in the main lens barrel 4 to realize the change of the interval axial position of an optical lens, when the image processing program judges the clear position of an image through an algorithm, the instruction is not sent to the motor driving program any more, and the motor stops rotating, so that the focusing function is finally realized. The above-mentioned program sending instruction and controlling the movement of the corresponding component are all the prior art, and are not described in detail herein.
In this embodiment, the motor inner ring 12-1 and the motor outer ring 12-2 of the torque motor 12 are integrally designed.
In this embodiment, the first tension spring mounting groove 13-1-1 and the second tension spring mounting groove 13-2-1 are all provided with 3, and each corresponding tension spring mounting groove is correspondingly provided with a tension spring mounting hole.
In this embodiment, the motor bracket 9 is mounted on the main barrel 4 by screws.
In this embodiment, the torque motor 11 is in butt joint with the motor bracket 9 through a mechanical spigot.
In this embodiment, the backlash eliminating gear set 13 is fixed to the driving spindle 11 by a jackscrew.
In this embodiment, the first gear 13-1 and the second gear 13-2 are fixedly connected together by screws, the gear mounting hole 13-2-4 is provided in the radial direction of the gear mounting portion 13-2-3 of the second gear 13-2, the gear mounting hole 13-2-4 fixedly connects the second gear 13-2 with the driving spindle 11 by cooperating with a jackscrew, and the cooperating position is smeared with thread anti-loosening glue to further improve the stability of the device.
In this embodiment, the modules of the first gear 13-1, the second gear 13-2 and the cam are 0.5, the number of teeth of the first gear 13-1 and the second gear 13-2 is 36, and the transmission ratio of the backlash gear set 13 to the cam is 1: and 4, the adjustment can be actually performed according to the requirement, the minimum focusing movement step length can be improved by increasing the transmission ratio, and the focusing precision is improved.
The invention also comprises a focusing method for the high-precision return difference-free gear focusing mechanism of the aviation camera based on any one of the above, which specifically comprises the following steps: the image processing program sends an instruction to a driving program of the torque motor 12, the torque motor 12 drives and controls a driving main shaft 11 in the focusing execution assembly 1 to rotate, a clearance eliminating gear set 13 in the focusing execution assembly 1 is meshed with a cam on the cam assembly 6, the cam is driven to rotate when the focusing execution assembly 1 rotates, the guide nail 5 rotates along a linear chute of the main lens barrel 4, the focusing lens group 7 slides in the main lens barrel 4 to realize the change of the interval axial position of the optical lens, when the image processing program judges the clear image position through an algorithm, the instruction is not sent to the driving program of the torque motor 12 any more, the motor stops rotating, and finally the focusing function is realized.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. A high precision no return difference gear focusing mechanism for an aerial camera, comprising: the focusing device comprises a focusing execution assembly (1), a touch switch (2), a limiting block (3), a main lens barrel (4), a sliding guide pin (5), a cam assembly (6) and a focusing lens group (7);
the focusing lens group (7) is connected to the inside of the main lens barrel (4), the focusing lens group (7) is fixedly connected with a pair of sliding guide nails (5), a sleeve in the cam assembly (6) is sleeved on the outside of the main lens barrel (4), and the pair of sliding guide nails (5) are matched and connected with a straight line chute penetrating through the main lens barrel (4) and on the sleeve; the cam in the cam component (6) is fixedly connected to the sleeve, the touch switch (2) is connected to the side wall of the main lens barrel (4) through the adapter, and the limiting block (3) is fixedly connected to the sleeve and is positioned below the touch switch (2);
the focusing execution assembly (1) comprises a tension spring (8), a motor bracket (9), a photoelectric encoder (10), a driving main shaft (11), a torque motor (12) and a clearance eliminating gear set (13); the torque motor (12) is fixedly connected above the main lens barrel (4) through a motor bracket (9), the driving main shaft (11) is fixedly connected on a motor inner ring (12-1) of the torque motor (12), an encoder outer ring (10-1) on the photoelectric encoder (10) is arranged on the motor bracket (9), an encoder inner ring (10-2) on the photoelectric encoder (10) is arranged on the driving main shaft (11), the clearance gear set (13) comprises a first gear (13-1) and a second gear (13-2), the first gear (13-1) and the second gear (13-2) are fixedly connected on the driving main shaft (11), a first tension spring mounting groove (13-1) and a second tension spring mounting groove (13-2-1) are respectively arranged on the first gear (13-1) and the second gear (13-2), a first tension spring mounting hole (13-1) and a second tension spring mounting groove (13-2) are correspondingly arranged on the first tension spring mounting hole (13-1) and the second tension spring mounting groove (13-2) and are correspondingly arranged in the first tension spring mounting hole (13-1-2) and the second tension spring mounting hole (13-2) respectively arranged on the second gear (13-2), and two ends of the tension spring (8) are respectively connected with the first tension spring mounting hole (13-1-2) and the second tension spring mounting hole (13-2-2) through fixing pieces.
2. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the motor inner ring (12-1) and the motor outer ring (12-2) of the torque motor (12) are integrally designed.
3. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the first tension spring mounting groove (13-1-1) and the second tension spring mounting groove (13-2-1) are both provided with 3.
4. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the motor bracket (9) is mounted on the main barrel (4) by screws.
5. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the torque motor (11) is in butt joint with a motor bracket (9) through a mechanical spigot.
6. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the backlash eliminating gear set (13) is fixed on the driving spindle (11) by a jackscrew.
7. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the first gear (13-1) and the second gear (13-2) are fixedly connected together through screws, a gear mounting hole (13-2-4) is formed in the radial direction of the gear mounting portion (13-2-3) of the second gear (13-2), and the gear mounting hole (13-2-4) fixedly connects the second gear (13-2) with the driving main shaft (11) through cooperation with a jackscrew.
8. The high-precision return-difference-free gear focusing mechanism for an aerial camera according to claim 1, wherein the modulus of the first gear (13-1), the second gear (13-2) and the cam is 0.5, the number of teeth of the first gear (13-1) and the second gear (13-2) is 36, and the transmission ratio of the backlash eliminating gear set (13) to the cam is 1:4.
9. a focusing method based on the high-precision return difference-free gear focusing mechanism for an aerial camera as claimed in any one of claims 1 to 8, which is characterized by specifically comprising the following steps: the image processing program sends an instruction to a driving program of a torque motor (12), the torque motor (12) drives and controls a main shaft (11) in a focusing execution assembly (1) to rotate, a clearance eliminating gear set (13) in the focusing execution assembly (1) is meshed with a cam on a cam assembly (6), the cam is driven to rotate when the focusing execution assembly (1) rotates, a guide pin (5) rotates along a linear chute of a main lens barrel (4), the focusing lens group (7) slides in the main lens barrel (4) to realize the change of the interval axial position of an optical lens, and when the image processing program judges the clear position of an image through an algorithm, the instruction is not sent to the driving program of the torque motor (12) any more, and the motor stops rotating to finally realize the focusing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410202258.3A CN117849983A (en) | 2024-02-23 | 2024-02-23 | High-precision return difference-free gear focusing mechanism and method for aviation camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410202258.3A CN117849983A (en) | 2024-02-23 | 2024-02-23 | High-precision return difference-free gear focusing mechanism and method for aviation camera |
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| Publication Number | Publication Date |
|---|---|
| CN117849983A true CN117849983A (en) | 2024-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410202258.3A Pending CN117849983A (en) | 2024-02-23 | 2024-02-23 | High-precision return difference-free gear focusing mechanism and method for aviation camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117849983A (en) |
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2024
- 2024-02-23 CN CN202410202258.3A patent/CN117849983A/en active Pending
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